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Kastelein Johannes Jacob Pieter Insider Profile
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Kastelein Johannes Jacob Pieter, CSO, Director at NewAmsterdam Pharma Company, holds 98.98K shares in NewAmsterdam Pharma Company (Ticker: NAMS). Most recently, Kastelein Johannes Jacob Pieter Sold 6,000 shares of NewAmsterdam Pharma Company on Jan 07, 2026 for an estimated value of $199.50K.
Kastelein Johannes Jacob Pieter NewAmsterdam Pharma Company (NAMS)CSO, Director
NewAmsterdam Pharma Company (NAMS)
CSO, Director
Ranked #72,750 out of 105,518 Corporate Insiders
Profitable Transactions
0 out of 2 Profitable Transactions
Average Return
-22.90%
Average return per transaction
Time Frame
Compare to
Insider Holdings
100.00%
A breakdown of Kastelein Johannes Jacob Pieter's holdings
Insider Roles
CSO, Director
Roles that Kastelein Johannes Jacob Pieter holds in companies
Most Profitable Insider Trade
Stock:
Rating:Informative Sell
Date:Jan 07, 2026 - Today
Return:-0.90%
The most profitable trade made by Kastelein Johannes Jacob Pieter
Kastelein Johannes Jacob Pieter's Trading History
List of latest transactions for each holding click on a transaction to see Kastelein Johannes Jacob Pieter's performance on stock
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Kastelein Johannes Jacob Pieter insider profile FAQ
What is the percentage of profitable transactions made by Kastelein Johannes Jacob Pieter?
The percentage of profitable transactions made by Kastelein Johannes Jacob Pieter is 0%.
What is the average return per transaction made by Kastelein Johannes Jacob Pieter?
The average return per transaction made by Kastelein Johannes Jacob Pieter is -22.90%.
What stocks does Kastelein Johannes Jacob Pieter hold?
Kastelein Johannes Jacob Pieter holds: NAMS stocks.
What was Kastelein Johannes Jacob Pieter’s latest transaction?
Kastelein Johannes Jacob Pieter latest transaction was an Informative Sell of $199.50K.
What was Kastelein Johannes Jacob Pieter's most profitable transaction?
Kastelein Johannes Jacob Pieter’s most profitable transaction was an Informative Sell of NAMS stock on January 7, 2026. The return on the trade was -0.90%.
What is Kastelein Johannes Jacob Pieter's role in NewAmsterdam Pharma Company?
Kastelein Johannes Jacob Pieter's role in NewAmsterdam Pharma Company is CSO, Director.
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